Albany, NY & 47 & 100,253 & Markel et al.\ (2007) \\
Atlanta, GA & 46 & 154,839 & Influenza Archive 2.0 \\
Baltimore, MD & 43 & 558,485 & Markel et al.\ (2007) \\
Birmingham, AL & 48 & 132,685 & Markel et al.\ (2007) \\
Boston, MA & 50 & 670,585 & Markel et al.\ (2007) \\
Buffalo, NY & 49 & 423,715 & Markel et al.\ (2007) \\
Cambridge, MA & 49 & 104,839 & Markel et al.\ (2007) \\
Charleston, SC & 69 & 58,833 & Influenza Archive 2.0 \\
Chicago, IL & 68 & 2,185,283 & Markel et al.\ (2007) \\
Cincinnati, OH & 123 & 363,591 & Markel et al.\ (2007) \\
Cleveland, OH & 99 & 560,663 & Markel et al.\ (2007) \\
Columbus, OH & 147 & 181,511 & Markel et al.\ (2007) \\
Dallas, TX & 41 & 92,104 & Influenza Archive 2.0 \\
Dayton, OH & 156 & 116,577 & Markel et al.\ (2007) \\
Denver, CO & 151 & 213,381 & Markel et al.\ (2007) \\
Des Moines, IA & 56 & 86,368 & Influenza Archive 2.0 \\
Detroit, MI & 29 & 465,766 & Influenza Archive 2.0 \\
Fall River, MA & 60 & 119,295 & Markel et al.\ (2007) \\
Grand Rapids, MI & 62 & 112,571 & Markel et al.\ (2007) \\
Indianapolis, IN & 82 & 233,650 & Markel et al.\ (2007) \\
Kansas City, MO & 170 & 248,381 & Markel et al.\ (2007) \\
Los Angeles, CA & 154 & 319,198 & Markel et al.\ (2007) \\
Louisville, KY & 145 & 223,928 & Markel et al.\ (2007) \\
Lowell, MA & 59 & 106,294 & Markel et al.\ (2007) \\
Milwaukee, WI & 132 & 373,857 & Markel et al.\ (2007) \\
Minneapolis, MN & 116 & 301,408 & Markel et al.\ (2007) \\
Nashville, TN & 55 & 110,364 & Markel et al.\ (2007) \\
New Haven, CT & 39 & 133,605 & Markel et al.\ (2007) \\
New Orleans, LA & 78 & 339,075 & Markel et al.\ (2007) \\
New York City, NY & 73 & 4,766,883 & Markel et al.\ (2007) \\
Newark, NJ & 33 & 347,469 & Markel et al.\ (2007) \\
Oakland, CA & 127 & 150,174 & Markel et al.\ (2007) \\
Omaha, NE & 140 & 124,096 & Markel et al.\ (2007) \\
Philadelphia, PA & 51 & 1,549,008 & Markel et al.\ (2007) \\
Pittsburgh, PA & 53 & 533,905 & Markel et al.\ (2007) \\
Portland, OR & 162 & 207,214 & Markel et al.\ (2007) \\
Providence, RI & 42 & 224,326 & Markel et al.\ (2007) \\
Richmond, VA & 60 & 127,628 & Markel et al.\ (2007) \\
Rochester, NY & 54 & 218,149 & Markel et al.\ (2007) \\
Salt Lake City, UT & 141 & 92,777 & Influenza Archive 2.0 \\
San Antonio, TX & 81 & 96,614 & Influenza Archive 2.0 \\
San Francisco, CA & 67 & 416,912 & Markel et al.\ (2007) \\
Seattle, WA & 168 & 237,194 & Markel et al.\ (2007) \\
Spokane, WA & 164 & 104,402 & Markel et al.\ (2007) \\
St Louis, MO & 143 & 687,029 & Markel et al.\ (2007) \\
St Paul, MN & 28 & 214,744 & Markel et al.\ (2007) \\
Syracuse, NY & 39 & 137,249 & Markel et al.\ (2007) \\
Toledo, OH & 102 & 168,497 & Markel et al.\ (2007) \\
Washington, DC & 64 & 331,069 & Markel et al.\ (2007) \\
 Worcester, MA & 44 & 145,986 & Markel et al.\ (2007) \\